Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2025 Toyota Land Cruiser BaseFACTORY OEM SERVICE PROCEDURE
Lighting System
LIGHTING SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC Code | Description |
|---|---|
| B1244-00 | Light Sensor Circuit Malfunction |
| B241A-1C | Rear Height Sensor Circuit Voltage Out of Range |
| B242C-04 | Headlight Control Module (Sub) System Internal Failure |
| B242D-04 | Headlight Control Module (Main) System Internal Failure |
| B242E-14 | IG Circuit Short to Ground or Open |
| B242E-14 | IG Circuit Short to Ground or Open |
| B242F-14 | ECUB Circuit Short to Ground or Open |
| B242F-14 | ECUB Circuit Short to Ground or Open |
| B2439-00 | Headlight LH Circuit |
| B243A-00 | Headlight RH Circuit |
| U0100-87 | Lost Communication With ECM/PCM "A" Missing Message |
| U0100-87 | Lost Communication with ECM/PCM "A" Missing Message |
| U0101-87 | Lost Communication with TCM Missing Message |
| U0101-87 | Lost Communication with TCM Missing Message |
| U0111-87 | Lost Communication with Battery Energy Control Module "A" Missing Message |
| U0126-87 | Lost Communication with Steering Angle Sensor Module Missing Message |
| U0126-87 | Lost Communication with Steering Angle Sensor Module Missing Message |
| U0129-87 | Lost Communication with Brake System Control Module Missing Message |
| U0129-87 | Lost Communication with Brake System Control Module "A" Missing Message |
| U0129-87 | Lost Communication with Brake System Control Module "A" Missing Message |
| U0131-87 | Lost Communication with Power Steering Control Module "A" Missing Message |
| U0140-87 | Lost Communication with Body Control Module Missing Message |
| U0140-87 | Lost Communication with Body Control Module Missing Message |
| U0151-87 | Lost Communication with Restraints Control Module Missing Message |
| U0155-87 | Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message |
| U0155-87 | Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message |
| U0155-87 | Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message |
| U0163-87 | Lost Communication with Navigation Control Module Missing Message |
| U0164-87 | Lost Communication with HVAC Control Module Missing Message |
| U0168-87 | Lost Communication with Vehicle Security Control Module Missing Message |
| U0199-87 | Lost Communication with "Door Control Module A" Missing Message |
| U0200-87 | Lost Communication with "Door Control Module B" Missing Message |
| U0208-87 | Lost Communication with "Seat Control Module A" Missing Message |
| U0230-87 | Lost Communication with Rear Gate Module Missing Message |
| U023A-87 | Lost Communication with Image Processing Module "A" Missing Message |
| U023B-87 | Lost Communication with Image Processing Module "B" Missing Message |
| U0241-87 | Lost Communication with Headlamp Control Module "A" Missing Message |
| U0241-87 | Lost Communication with Headlamp Control Module "A" Missing Message |
| U0242-87 | Lost Communication with Headlamp Control Module "B" Missing Message |
| U0265-87 | Lost Communication with Image Processing Sensor A Missing Message |
| U0269-87 | Lost Communication with Image Processing Sensor E Missing Message |
| U1000-49 | CAN Register Fixing Internal Electronic Failure |
| U1000-49 | CAN Register Fixing Internal Electronic Failure |
| U1104-87 | Lost Communication with Cruise Control Module Missing Message |
| U1106-87 | Lost Communication with Electric Parking Brake Module Missing Message |
| U1107-87 | Lost Communication with Power Management Module Missing Message |
| U1110-87 | Lost Communication with Clearance Sonar Module Missing Message |
| U1115-87 | Lost Communication with Tilt & Telescopic Module Missing Message |
| U1117-87 | Lost Communication with Accessory Gateway Missing Message |
| U114F-87 | Lost Communication with Power Integration Module Missing Message |
| U114F-87 | Lost Communication with Power Integration Module Missing Message |
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.